ELITE PRO-SERIES PERFORMANCE: Delivering a massive 420CCA—nearly triple the cranking power of traditional YB10L-A2 lead-acid batteries. Engineered to provide fast, high-torque ignition for parallel-twins and high-compression emergency generator engines. TRUE DROP-IN FIT & NO SPACER: Exact dimensions of 5.31 x 3.54 x 5.71in (135x90x145mm) ensure a perfect fit for Group 10L battery boxes. Features a zero-spacer design with premium reinforced terminals, preventing the battery from rattling during rugged operation. EXTREME LIGHTWEIGHT ADVANTAGE: At just 2.2 lbs (1.0 kg), it sheds over 5 lbs of dead weight compared to bulky 7lb traditional batteries. This massive weight reduction lowers the motorcycle's center of gravity, drastically improving low-speed handling and cornering agility. ULTRA-LOW SELF-DISCHARGE RATE: Features advanced LiFePO4 chemistry with a minimal self-discharge rate (<1% per month). Your backup equipment remains charged and ready to start even after a full year of storage without a tender, offering ultimate peace of mind. MODERN CLASSIC FITMENT: Precision-tuned for qualified 2000+ stable-voltage applications including the Yamaha V Star 250 (2008–2024), Yamaha Virago 250 (2000–2007), and the Suzuki GS500 / GS500F (2001–2009) series for rapid and reliable hot and cold starts. ULTRA-RELIABLE GENERATOR START: Engineered as the ultimate premium upgrade for the highly popular Predator 3500 Inverter Generator (2017–2024). Guarantees an instant one-key start during critical weather emergencies, power outages, and grid failures. SMART BMS & SAFETY COMPLIANCE: Integrated BMS manages cell health and protects against over-charge, deep discharge, and thermal runaway. Requires a regulated charging system BELOW 15.0V. Use ONLY dedicated LiFePO4 chargers; avoid pulse-repair chargers. The TYKOOL LFP10L-A2 is the definitive energy upgrade for riders and homeowners who demand zero failure in the field. While traditional open-lead batteries require messy acid maintenance, leak corrosive vapors, and quickly drain in storage, our PRO series delivers a powerful 420CCA and 7Ah capacity in a 2.2lb sealed package. Specifically tuned for the reliable Yamaha V Star 250 (2008-2024) and built for the mission-critical backup power of the Predator 3500 Generator (2017-2024), it features an onboard LCD monitor for real-time voltage telemetry. TYKOOL provides the ultimate starting torque, extended life, and disaster-preparedness required for modern performance. (Requires $<$15V regulated charging).